阅读说明：本技术 一种钛合金制高尔夫球杆及其杆体的制备方法 (Titanium alloy golf club and preparation method of club body thereof ) 是由 王卫民 王晔 那晓菲 于 2021-06-25 设计创作，主要内容包括：本发明公开了一种钛合金制高尔夫球杆及其杆体的制备方法,涉及高尔夫球杆技术领域,通过球柄；杆体,杆体与球柄的一端连接,且,所述杆体为锥形形状,或,台阶形状,其中,所述台阶形状中包括多个第一台阶,且每个所述第一台阶具有第一长度；球头,所述球头与所述杆体远离所述球柄的一端连接,其中,所述球柄与所述杆体、所述杆体与所述球头之间均采用焊接方式连接,解决了现有技术中的钛合金高尔夫球杆的合金强度低,弹性差,复合材料杆塑性差,稳定性差,且两种球杆均与钛制球头连接方法单一,易于脱落的技术问题,达到了β钛合金高尔夫球杆产品的强度高,弹性好,重量轻,疲劳性好,且与钛制球头基体材质一致,可焊接连接的技术效果。(The invention discloses a titanium alloy golf club and a preparation method of a club body thereof, relating to the technical field of golf clubs, and comprising a handle; the ball handle comprises a rod body and a ball handle, wherein the rod body is connected with one end of the ball handle and is in a conical shape or a step shape, the step shape comprises a plurality of first steps, and each first step has a first length; the golf club head is connected with one end of the club body, which is far away from the club handle, wherein the club handle is connected with the club body and the club head in a welding mode, so that the technical problems that the titanium alloy golf club in the prior art is low in alloy strength, poor in elasticity, poor in plasticity of a composite material rod and poor in stability, two golf club bodies are connected with the titanium club head in a single method and are easy to fall off are solved, and the technical effects of high strength, good elasticity, light weight, good fatigue, consistency with a titanium club head base body and weldable connection of a beta titanium alloy golf club product are achieved.)

1. A titanium alloy golf club, comprising:

a ball handle;

the rod body is connected with one end of the ball handle and is in a conical shape or a step shape, wherein the step shape comprises a plurality of first steps, and each first step has a first length;

the ball head is connected with one end of the rod body, which is far away from the ball handle;

the ball handle is connected with the rod body and the ball head in a welding mode.

2. The golf club of claim 1, wherein the first step has a step diameter gradient difference of 0.5mm and the first length ranges from 40 to 50 mm.

3. The golf club of claim 1, wherein the shaft has a first end and a second end, wherein the first end has a diameter of 14.8-15.4mm and the second end has a diameter of 8.3-9.5 m.

4. The golf club of claim 1, wherein the shaft, shaft and head are each made of a beta titanium alloy.

5. A method for preparing a golf club body made of titanium alloy is characterized by comprising the following steps:

obtaining a first beta titanium alloy pipe blank according to a preset requirement;

carrying out one-pass or multi-pass cold rolling deformation on the first beta titanium alloy pipe blank on a cold rolling pipe mill to obtain a first pipe blank, wherein the first pipe blank meets a first preset condition;

the method comprises the following steps of wrapping a first pipe blank by adopting a first material, and heating a first end, wrapped by the first material, of the first pipe blank, wherein the heating parameters are as follows: the heating temperature is 600-;

preparing a first mold and/or a second mold based on the size requirement of the golf club body;

placing the first pipe blank subjected to the heating treatment in the first mold, and/or placing the first pipe blank in the second mold, and correspondingly obtaining a first rod body and/or a second rod body after rolling and pressing;

stress relief annealing is carried out on the first rod body and/or the second rod body;

and correspondingly obtaining a first golf club body and/or a second golf club body after the first club body and/or the second club body are subjected to the surface decoration process after the stress relief annealing.

6. The method of manufacturing a golf club shaft according to claim 5, wherein the first predetermined condition is specifically: the diameter of the first tube blank is 15mm, the wall thickness is 0.3-0.8mm, the length is greater than 1000mm, the processing deformation is not less than 50%, the yield strength of the first tube blank is not less than 760MPa, and the elongation is greater than 8%.

7. The method of making a golf club shaft as defined in claim 5 further comprising:

after the heating treatment, the yield strength of the part 0-250mm away from the end of the first end is not more than 650MPa, and the yield strength of the part 250-400mm away from the end of the first end is not more than 700 MPa.

8. The method of making a golf club shaft as defined in claim 5 further comprising:

the processing specification of the first die is specifically as follows: the diameter of the large end of the rod body of the first die is 14.8-15.4mm, the diameter of the small end part of the rod body is 8.3-9.5m, and the length of the cone is 450 mm;

the processing specification of the second die is specifically as follows: the diameter of the large end of the rod body of the second die is 14.8-15.4mm, the diameter of the small end part of the rod body is 8.3-9.5m, the second die comprises N steps, each step has a second length, and the diameter gradient difference of each step is 0.5 mm.

9. The method of making a golf club shaft according to claim 5 wherein the stress relief annealing is performed using the following parameters: the heating temperature is 350-450 ℃, the heat preservation time is 30-60 minutes, and the furnace is cooled or the air is cooled.

10. The method of making a golf club body as defined in claim 5 wherein said surface finishing process includes surface polishing, anodization, electrophoresis, micro-arc oxidation.

Technical Field

The invention belongs to the technical field of golf clubs, and particularly relates to a titanium alloy golf club and a preparation method of a club body thereof.

Background

Because the titanium alloy has the characteristics of small specific gravity, high strength, low elastic modulus, good elasticity, good fatigue property, corrosion resistance, good impact resistance and the like, the titanium alloy is an ideal material for manufacturing the cue and the striking ball head. From the eighties of the last century, the development of precision casting and die forging technology realizes the production of the golf striking head made of titanium alloy, and the market of the golf striking head made of titanium alloy accounts for over 95 percent at present. However, no titanium golf club has been reported. Current golf clubs are made primarily from carbon fiber and high strength steel. The carbon fiber cue has light weight (less than 110g), good elasticity, but poor plasticity and easy brittle fracture; high-strength steel (iron rod) has high strength, high toughness, poor elasticity and heavy weight (more than 130 g). The titanium alloy has the advantages of both and is the most ideal material for manufacturing the golf club.

At present, the process for industrially producing the titanium alloy pipes with the same wall and the same diameter in the conventional specification is mature, and the pipes with various specifications of beta are widely applied to aviation catheters, high-end titanium pipes for bicycles and the like. But the manufacturing process of the golf club with high strength of beta alloy (the tensile strength is not lower than 860MPa, the yield strength is not lower than 760MPa), variable wall and variable diameter (the thickness of the variable wall is 0.3-0.9mm, the diameter of the variable diameter specification is 8.3-15.4mm), long axis (the length exceeds 1000mm) and light weight (the weight is less than 110g) is not available.

Disclosure of Invention

The embodiment of the application provides a golf club made of titanium alloy and a manufacturing method of a club body of the golf club, solves the technical problems that the titanium alloy golf club prepared in the prior art is low in alloy strength and poor in elasticity, the prepared golf club is large in weight, the composite material is poor in plasticity and poor in stability, two golf clubs are single in connection method with a titanium ball head and easy to fall off, and the technical effects that a beta titanium alloy golf club product is high in strength, good in elasticity, light in weight, good in fatigue, good in product consistency and stability, consistent with a titanium ball head base body and capable of being welded and connected are achieved.

In one aspect, an embodiment of the present invention provides a golf club made of a titanium alloy, including: a ball handle; the rod body is connected with one end of the ball handle and is in a conical shape or a step shape, wherein the step shape comprises a plurality of first steps, and each first step has a first length; the ball head is connected with one end of the rod body, which is far away from the ball handle; the ball handle is connected with the rod body and the ball head in a welding mode.

Preferably, the step diameter gradient difference of the first step is 0.5mm, and the range of the first length is 40-50 mm.

Preferably, the rod body has a first end and a second end, wherein the first end has a diameter of 14.8-15.4mm and the second end has a diameter of 8.3-9.5 m.

Preferably, the ball handle, the rod body and the ball head are all made of beta titanium alloy.

On the other hand, the embodiment of the invention also provides a preparation method of the golf club made of the titanium alloy, which comprises the following steps: obtaining a first beta titanium alloy pipe blank according to a preset requirement; carrying out one-pass or multi-pass cold rolling deformation on the first beta titanium alloy pipe blank on a cold rolling pipe mill to obtain a first pipe blank, wherein the first pipe blank meets a first preset condition; the method comprises the following steps of wrapping a first pipe blank by adopting a first material, and heating a first end, wrapped by the first material, of the first pipe blank, wherein the heating parameters are as follows: the heating temperature is 600-; preparing a first mold and/or a second mold based on the size requirement of the golf club body; placing the first pipe blank subjected to the heating treatment in the first mold, and/or placing the first pipe blank in the second mold, and correspondingly obtaining a first rod body and/or a second rod body after rolling and pressing; stress relief annealing is carried out on the first rod body and/or the second rod body; and correspondingly obtaining a first golf club body and/or a second golf club body after the first club body and/or the second club body are subjected to the surface decoration process after the stress relief annealing.

Preferably, the first preset condition is specifically as follows: the diameter of the first tube blank is 15mm, the wall thickness is 0.3-0.8mm, the length is greater than 1000mm, the processing deformation is not less than 50%, the yield strength of the first tube blank is not less than 760MPa, and the elongation is greater than 8%.

Preferably, the method further comprises the following steps: after the heating treatment, the yield strength of the part 0-250mm away from the end of the first end is not more than 650MPa, and the yield strength of the part 250-400mm away from the end of the first end is not more than 700 MPa.

Preferably, the method further comprises the following steps: the processing specification of the first die is specifically as follows: the diameter of the large end of the rod body of the first die is 14.8-15.4mm, the diameter of the small end part of the rod body is 8.3-9.5m, and the length of the cone is 450 mm; the processing specification of the second die is specifically as follows: the diameter of the large end of the rod body of the second die is 14.8-15.4mm, the diameter of the small end part of the rod body is 8.3-9.5m, the second die comprises N steps, each step has a second length, and the diameter gradient difference of each step is 0.5 mm.

Preferably, the specific parameters of the stress relief annealing are as follows: the heating temperature is 350-450 ℃, the heat preservation time is 30-60 minutes, and the furnace is cooled or the air is cooled.

Preferably, the surface decoration process comprises surface polishing, anodic oxidation, electrophoresis and micro-arc oxidation.

One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:

the embodiment of the invention provides a golf club made of titanium alloy, wherein a club body of the golf club comprises a ball handle; the rod body is connected with one end of the ball handle and is in a conical shape or a step shape, wherein the step shape comprises a plurality of first steps, and each first step has a first length; the bulb is connected with one end, far away from the bulb, of the rod body, the bulb is connected with the rod body and the bulb in a welding mode, and during preparation, a first beta titanium alloy pipe blank is obtained according to preset requirements; carrying out one-pass or multi-pass cold rolling deformation on the first beta titanium alloy pipe blank on a cold rolling pipe mill to obtain a first pipe blank, wherein the first pipe blank meets a first preset condition; adopt first material to wrap up first pipe to wrap up the first end of first material on the first pipe and carry out heat treatment, wherein, the heat treatment parameter is: the heating temperature is 600-; preparing a first mold and/or a second mold based on the size requirement of the golf club body; placing the first pipe blank subjected to the heating treatment in a first mold and/or a second mold, and correspondingly obtaining a first rod body and/or a second rod body after rolling and pressing; stress relief annealing is carried out on the first rod body and/or the second rod body; the first rod body and/or the second rod body after stress relief annealing are/is subjected to surface decoration process, and then a first golf club rod body and/or a second golf club rod body are/is correspondingly obtained, so that the technical problems that the titanium alloy golf club prepared in the prior art is low in alloy strength, poor in elasticity, large in weight, poor in plasticity of a composite material rod and poor in stability, and the two golf club bodies are single in connection method with a titanium ball head and easy to fall off are solved, and the technical effects that a beta titanium alloy golf club product is high in strength, good in elasticity, light in weight, good in fatigue, good in product consistency and stability, consistent with a titanium ball head base body and capable of being welded and connected are achieved.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

FIG. 1 is a schematic structural view of a golf club made of a titanium alloy according to an embodiment of the present invention;

FIG. 2 is a schematic view of the rod body shown in FIG. 1;

FIG. 3 is another schematic structural view of the rod body shown in FIG. 1;

FIG. 4 is a schematic flow chart of a method of making a titanium alloy golf club body in accordance with an embodiment of the present invention.

Description of reference numerals: 1-a ball handle; 2-a rod body; 3-a ball head; 4-first step.

Detailed Description

The embodiment of the application provides a titanium alloy golf club and a preparation method of a club body thereof, and aims to solve the technical problems that the titanium alloy golf club prepared in the prior art is low in alloy strength and poor in elasticity, the prepared golf club is large in weight, the composite material is poor in plasticity and poor in stability, and the two golf clubs and a titanium ball head are single in connection method and easy to fall off.

The technical scheme in the embodiment of the invention has the following general idea:

the embodiment of the invention provides a golf club made of titanium alloy and a preparation method of a club body of the golf club, which comprises the following steps of (1) passing a ball handle; the rod body is connected with one end of the ball handle and is in a conical shape or a step shape, wherein the step shape comprises a plurality of first steps, and each first step has a first length; the golf club head is connected with one end of the club body, which is far away from the club handle, wherein the club handle is connected with the club body and the club head in a welding mode, so that the technical problems that the titanium alloy golf club prepared in the prior art is low in alloy strength, poor in elasticity, large in weight, poor in composite material rod plasticity and poor in stability, the two golf club bodies are connected with the titanium club head in a single method and are easy to fall off are solved, and the technical effects that a beta titanium alloy golf club product is high in strength, good in elasticity, light in weight, good in fatigue, good in product consistency and stability, consistent with a titanium club head base body material and capable of being welded and connected are achieved.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

This embodiment provides a golf club made of titanium alloy, please refer to fig. 1, which includes:

a ball handle 1;

the ball handle comprises a rod body 2, wherein the rod body 2 is connected with one end of the ball handle 1, the rod body 2 is in a conical shape or a step shape, the step shape comprises a plurality of first steps 4, and each first step 4 has a first length;

the ball head 3, the ball head 3 with the body of rod 2 is kept away from the one end of ball handle 1 is connected, wherein, the ball handle with the body of rod, the body of rod with all adopt the welding mode to be connected between the ball head.

Further, the step diameter gradient difference of the first step 4 is 0.5mm, and the range of the first length is 40-50 mm.

Further, the rod body 2 has a first end and a second end, wherein the diameter of the first end is 14.8-15.4mm, and the diameter of the second end is 8.3-9.5 m.

Furthermore, the ball handle 1, the rod body 2 and the ball head 3 are all made of beta titanium alloy.

Specifically, the golf club shaft of the present embodiment mainly includes a grip 1, a shaft 2, and a head 3, and the grip 1 is connected to one end of the shaft 2, and the head 3 is connected to the other end of the shaft 2, that is, the shaft 2 is installed between the grip 1 and the head 3.

Further, the shape of the rod body 2 is a conical shape or a step shape, and when the rod body is actually used, a proper rod body structure can be selected according to specific needs. The rod body 2 comprises a first end portion and a second end portion, and the diameter of the first end portion is larger than that of the second end portion, that is, the first end portion is a large head of the rod body 2, and the second end portion is a small head of the rod body 2. When the shape of the rod body 2 is a tapered shape, as shown in fig. 2, the diameter of the first end portion is 14.8 to 15.4mm and the diameter of the second end portion is 8.3 to 9.5m, that is: the diameter of the big end is 14.8-15.4mm, the diameter of the small end is 8.3-9.5m, the length of the cone is 450mm, and the total length exceeds 1000 mm; when the rod body 2 is in the shape of a step, as shown in fig. 3, namely, a plurality of first steps 4 are formed on the rod body 2, the first steps 4 have a first length, the range of the first length is 40-50 mm, the diameter of the large end is 14.8-15.4mm, the diameter of the small end is 8.3-9.5m, the number of the first steps 4 can be set according to actual needs, and meanwhile, the length of the first steps 4 can also be set according to actual needs. In the embodiment, the number of the first steps 4 is 10, each step is 45mm long, the diameter gradient difference of each step is 0.5mm, the step length is 450mm, and the total length exceeds 1000 mm.

Further, the material of the ball handle 1, the rod body 2 and the ball head 3 is beta titanium alloy, and in practical use, TA18 titanium alloy, Ti15333 and other alloys can be used as required, which is not specifically limited in this embodiment. And the connection mode adopts welding connection, and two types of beta titanium alloy golf clubs can be designed according to different structures of the club body 2.

Example two

On the other hand, the embodiment also provides a method for manufacturing a golf club shaft body made of titanium alloy, please refer to fig. 4, which includes:

step 110: obtaining a first beta titanium alloy pipe blank according to a preset requirement;

specifically, when a beta titanium alloy golf club body is prepared, firstly, a first beta titanium alloy pipe blank is obtained according to a preset requirement, namely, a pipe blank for the beta titanium alloy golf club body is produced according to the GB/T3624 standard requirement, and the pipe blank is qualified through tensile property, flattening property, eddy current flaw detection and ultrasonic flaw detection; the specification of the blank is as follows: the diameter is more than 17mm, the wall thickness is more than 0.9mm, and the length is more than 600 mm.

Step 120: carrying out one-pass or multi-pass cold rolling deformation on the first beta titanium alloy pipe blank on a cold rolling pipe mill to obtain a first pipe blank, wherein the first pipe blank meets a first preset condition;

further, the first preset condition is specifically that: the diameter of the first tube blank is 15mm, the wall thickness is 0.3-0.8mm, the length is greater than 1000mm, the processing deformation is not less than 50%, the yield strength of the first tube blank is not less than 760MPa, and the elongation is greater than 8%.

Specifically, after the first β -titanium alloy pipe blank is obtained, the β -titanium alloy pipe blank prepared in step 110 may be subjected to one-pass or multiple-pass cold rolling deformation on the LD15 cold rolling mill, so as to obtain the first pipe blank, and it is necessary to ensure that the first pipe blank satisfies the first preset condition. The first preset condition is specifically as follows: the diameter of the first tube blank is 15mm, the wall thickness is 0.3-0.8mm, the length is more than 1000mm, the processing deformation is not less than 50%, the yield strength of the first tube blank is not less than 760MPa, and the elongation is more than 8%. In other words, the beta titanium alloy tube blank is rolled on a cold pilger mill into a tube blank with the first rolling diameter of 15mm (tolerance +0.4, -0.1), the wall thickness of 0.3-0.8mm and the length of more than 1000mm, and the processing deformation is not less than 50%. The yield strength of the tube blank is not less than 760MPa, and the elongation is more than 8%.

Step 130: the method comprises the following steps of wrapping a first pipe blank by adopting a first material, and heating a first end, wrapped by the first material, of the first pipe blank, wherein the heating parameters are as follows: the heating temperature is 600-;

further, after the heating treatment, the yield strength of the part 0-250mm away from the end of the first end is not more than 650MPa, and the yield strength of the part 250-400mm away from the end of the first end is not more than 700 MPa.

Specifically, the β titanium alloy tube blank prepared in step 120 is then wrapped with the first material, and then the first end of the first tube blank wrapped with the first material is subjected to a heating process. In this embodiment, the first material is preferably a corrosion-resistant and high-temperature-resistant material. The heating treatment mode is a heat treatment salt bath furnace or local heating by adopting an electric heating mode, namely, a corrosion-resistant and high-temperature-resistant material is adopted to wrap the tube blank by no more than 500mm, and then the wrapped tube blank at one end is locally heated in the heat treatment salt bath furnace or the electric heating mode. Further, the heating process parameters are as follows: the heating temperature is 600-750 ℃, and the heating time comprises a first time period and a second time period, wherein the part 0-250mm away from the end head of the first end is heated for 2-15 minutes, and the part 250-400mm away from the end head of the first end is heated for 2-6 minutes. Heating and preserving heat, and then cooling to room temperature. After heat treatment, the yield strength satisfies: the 0-250mm portion is not more than 650MPa, and the 250-400mm portion is not more than 700 MPa.

Step 140: preparing a first mold and/or a second mold based on the size requirement of the golf club body;

further, the processing specification of the first mold is specifically as follows: the diameter of the large end of the rod body of the first die is 14.8-15.4mm, the diameter of the small end part of the rod body is 8.3-9.5m, and the length of the cone is 450 mm; the processing specification of the second die is specifically as follows: the diameter of the large end of the rod body of the second die is 14.8-15.4mm, the diameter of the small end part of the rod body is 8.3-9.5m, the second die comprises N steps, each step has a second length, and the diameter gradient difference of each step is 0.5 mm.

Specifically, a first mold and a second mold are prepared according to the size requirement of the golf club body, and in this embodiment, the first mold is preferably a tapered mold, and the second mold is preferably a stepped mold. Further, the machining specification of the conical die is specifically as follows: the diameter of the big end of the conical pipe part is 14.8-15.4mm, the diameter of the small end part is 8.3-9.5m, and the length of the cone is 450 mm; the processing specification of the step type die is as follows: the large head diameter is 14.8-15.4mm, the small head diameter is 8.3-9.5m, and the second die comprises N steps, and each step has a second length, and the diameter gradient difference of each step is 0.5 mm. In the embodiment, the number of steps is 10, each step is 45mm long, the gradient difference of the diameter of each step is 0.5mm, and the total length of the steps is 450 mm.

Step 150: placing the first pipe blank subjected to the heating treatment in the first mold, and/or placing the first pipe blank in the second mold, and correspondingly obtaining a first rod body and/or a second rod body after rolling and pressing;

specifically, the billet from step 130 is rolled and pressed into two types of beta titanium alloy golf club shafts in either a first or second mold: when the first rod body is placed in a first mould, the diameter of the large end of the first rod body is 14.8-15.4mm, the diameter of the small end part is 8.3-9.5m, the length of a cone is 450mm, and the total length exceeds 1000 mm; when the second rod body is placed in a second die, the diameter of the large end of the second rod body is 14.8-15.4mm, the diameter of the small end part is 8.3-9.5m, the number of steps is 10, the length of each step is 45mm, the diameter gradient difference of each step is 0.5mm, the length of each step is 450mm, and the total length exceeds 1000 mm.

Step 160: stress relief annealing is carried out on the first rod body and/or the second rod body;

further, the specific parameters of the stress relief annealing are as follows: the heating temperature is 350-450 ℃, the heat preservation time is 30-60 minutes, and the furnace is cooled or the air is cooled.

Specifically, the first rod body or the second rod body obtained in step 150 is subjected to a stress relief annealing treatment process under a vacuum or atmosphere protection condition, and the specific parameters of the stress relief annealing process are as follows: the heating temperature is 350-450 ℃, the heat preservation time is 30-60 minutes, and the furnace is cooled or the air is cooled.

Step 170: and correspondingly obtaining a first golf club body and/or a second golf club body after the first club body and/or the second club body are subjected to the surface decoration process after the stress relief annealing.

Further, the surface decoration process comprises surface polishing, anodic oxidation, electrophoresis and micro-arc oxidation.

Specifically, a surface decoration process is performed on the first rod body or the second rod body after stress relief annealing, that is, the beta titanium alloy golf club rod body processed in the step 160 is subjected to surface decoration by methods such as surface polishing, anodic oxidation, electrophoresis, micro-arc oxidation and the like, so that the first type golf club rod body or the second type golf club rod body can be obtained.

Therefore, in the method for manufacturing the golf club body made of titanium alloy in this embodiment, the pipe blank (diameter is greater than 17mm, wall thickness is greater than 0.9mm, length is greater than 600mm) for the beta titanium alloy golf club body qualified by the tensile property, the flattening property, the eddy current testing and the ultrasonic testing is produced according to the GB/T3624 standard, the pipe blank is processed into a high-strength high-elasticity golf club body pipe blank with diameter of 15mm through more than 50% of cold deformation, the pipe blank is locally heat-treated at 600 and 750 ℃, and then is rolled and respectively pressed in two types of dies to manufacture the titanium alloy golf club body: the diameter of the big end is 14.8-15.4mm, the diameter of the small end is 8.3-9.5m, the length of the cone is 450mm, and the total length exceeds 1000 mm; or the diameter of the big end is 14.8-15.4mm, the diameter of the small end is 8.3-9.5m, the number of steps is 10, the length of each step is 45mm, the gradient difference of the diameter of each step is 0.5mm, the length of each step is 450mm, and the total length exceeds 1000 mm.

Furthermore, the preparation method of the golf club body made of the titanium alloy in the embodiment has the advantages of easy process implementation and easy industrial standardized production. No special requirements for production equipment and low processing cost. Meanwhile, the beta titanium alloy golf club body produced by the method has the advantages of high strength, good elasticity, light weight and good fatigue. The elasticity of the body of the beta titanium alloy golf club can be adjusted according to different playing modes, and the consistency and the stability of the product are good.

Furthermore, the production process flow is not limited by the type of alloy, and can be alpha + beta type, alpha type or beta type. For alpha-type and beta-type titanium alloys, the heating temperature parameters of the alloys are only required to be adjusted according to the phase change and thermal deformation principles of the alloys. Meanwhile, the process flow is unchanged and easy to implement.

Furthermore, the weight of the body of the beta titanium alloy golf club produced by the invention is 70-110g, which is reduced by more than 20% compared with the weight of an iron club with the same specification.

EXAMPLE III

The following is a detailed description of the method for manufacturing a golf club body made of titanium alloy according to the present invention, and the method includes the following steps:

step 1: producing a pipe blank for a beta titanium alloy golf club body according to the GB/T3624 standard requirement; the pipe blank is qualified through tensile property, flattening property, eddy current flaw detection and ultrasonic flaw detection; specification of the blank: the diameter is 20.5mm, the wall thickness is more than 1.2mm, and the length is 600 mm.

Step 2: and (3) carrying out one-pass or multi-pass cold rolling deformation on the beta titanium alloy pipe blank prepared in the step (1) on an LD15 cold rolling pipe mill, and rolling the beta titanium alloy pipe blank into a pipe blank with the diameter of 15.1mm, the wall thickness of 0.45mm, the length of 1100mm and the processing deformation of 70%. The yield strength of the tube blank is 790MPa, and the elongation is 10%.

And step 3: and (3) wrapping the beta titanium alloy pipe blank prepared in the step (2) by using a corrosion-resistant and high-temperature-resistant material for less than or equal to 500mm, and then locally heating one wrapped end in a heat treatment salt bath furnace. The heating process comprises the following steps: the heating temperature is 680 ℃, the heating time is divided into two time periods, the part 0-250mm away from the end head is heated for 15 minutes, and the part 250-400mm away from the end head is heated for 5 minutes. Heating and preserving heat, and then cooling to room temperature. After heat treatment, the yield strength was: the 0-250mm portion is 640MPa, and the 250-400mm portion is 680 MPa.

And 4, step 4: preparing a conical die according to the size requirement of a golf club body, wherein the processing specification of the conical die is as follows: the diameter of the large end of the conical pipe part is 15.1mm, the diameter of the small end part is 9.4m, and the length of the cone is 450 mm;

and 5: rolling the blank in the step 3 process in a conical die to form a conical beta titanium alloy golf club body, wherein the specification is as follows: the diameter of the big end is 15.1mm, and the length is 300 mm; the diameter of the big end of the conical section is 15.1mm, the diameter of the small end is 9.4mm, and the length of the cone is 450 mm; the small end portion has a diameter of 9.4mm and a length of 300 mm. The total length is 1050 mm.

Step 6: and (3) performing stress relief annealing on the beta titanium alloy golf club body prepared in the step (5) under the vacuum or atmosphere protection condition, wherein the process comprises the following steps: heating at 350-450 deg.c for 30-60 min, and cooling in furnace or air.

And 7: and (4) carrying out surface decoration on the body of the beta titanium alloy golf club rod processed in the step 6 by using methods such as surface polishing, anodic oxidation, electrophoresis, micro-arc oxidation and the like.

Example four

The following is a detailed description of the method for manufacturing a golf club body made of titanium alloy according to the present invention, and the method includes the following steps:

step 1: producing a pipe blank for a beta titanium alloy golf club body according to the GB/T3624 standard requirement; the pipe blank is qualified through tensile property, flattening property, eddy current flaw detection and ultrasonic flaw detection; the specification of the blank is that the diameter is 19mm, the wall thickness is more than 1.2mm, and the length is 600 mm.

Step 2: and (3) carrying out one-pass or multi-pass cold rolling deformation on the beta titanium alloy pipe blank prepared in the step (1) on an LD15 cold rolling pipe mill, and rolling the beta titanium alloy pipe blank into a pipe blank with the diameter of 15.1mm, the wall thickness of 0.45mm, the length of 1100mm and the processing deformation of 55%. The yield strength of the tube blank is 770MPa, and the elongation is 12%.

And step 3: and (3) wrapping the beta titanium alloy pipe blank prepared in the step (2) by using a corrosion-resistant and high-temperature-resistant material for less than or equal to 500mm, and then carrying out local electric heating heat treatment on one wrapped end. The heating process comprises the following steps: the heating temperature was 680(+15, -15 ℃) and the heating time was 2 minutes. After heat treatment, the yield strength was 660 MPa.

And 4, step 4: according to the size requirement of a golf club body, preparing a step type mould, wherein the step type processing specification is as follows: the diameter of the large end is 15.1mm, the diameter of the small end is 9.4m, the number of steps is 10, the length of each step is 45mm, the diameter gradient difference of each step is 0.5mm, and the total length of the steps is 450 mm.

And 5: rolling and pressing the blank in the process of the step 3 in a step-shaped die to form a step-shaped beta titanium alloy golf club body, wherein the specification of the step-shaped beta titanium alloy golf club body is as follows: the diameter of the big end is 15.1mm, and the length is 300 mm; the diameter of the big end of the conical section is 15.1mm, the diameter of the small end of the conical section is 9.4mm, the length of each step is 450mm, and the diameters of the conical sections are 9.4, 9.9, 10.4, 10.9, 11.4, 11.9, 12.5, 13, 13.5, 14.6 and 15.1mm in sequence; the small end part has a diameter of 9.4mm, a length of 300mm and a total length of 1050 mm.

Step 6: and (3) performing stress relief annealing on the beta titanium alloy golf club body prepared in the step (5) under the vacuum or atmosphere protection condition, wherein the process comprises the following steps: heating at 350-450 deg.c for 30-60 min, and cooling in furnace or air.

And 7: and (5) performing surface decoration on the body of the beta titanium alloy golf club processed by the technological process in the step 6 by using methods such as surface polishing, anodic oxidation, electrophoresis, micro-arc oxidation and the like.

One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:

the embodiment of the invention provides a golf club made of titanium alloy, wherein a club body of the golf club comprises a ball handle; the rod body is connected with one end of the ball handle and is in a conical shape or a step shape, wherein the step shape comprises a plurality of first steps, and each first step has a first length; the bulb is connected with one end, far away from the bulb, of the rod body, the bulb is connected with the rod body and the bulb in a welding mode, and during preparation, a first beta titanium alloy pipe blank is obtained according to preset requirements; carrying out one-pass or multi-pass cold rolling deformation on the first beta titanium alloy pipe blank on a cold rolling pipe mill to obtain a first pipe blank, wherein the first pipe blank meets a first preset condition; adopt first material to wrap up first pipe to wrap up the first end of first material on the first pipe and carry out heat treatment, wherein, the heat treatment parameter is: the heating temperature is 600-; preparing a first mold and/or a second mold based on the size requirement of the golf club body; placing the first pipe blank subjected to the heating treatment in a first mold and/or a second mold, and correspondingly obtaining a first rod body and/or a second rod body after rolling and pressing; stress relief annealing is carried out on the first rod body and/or the second rod body; the first rod body and/or the second rod body after stress relief annealing are/is subjected to surface decoration process, and then a first golf club rod body and/or a second golf club rod body are/is correspondingly obtained, so that the technical problems that the titanium alloy golf club prepared in the prior art is low in alloy strength, poor in elasticity, large in weight, poor in plasticity of a composite material rod and poor in stability, and the two golf club bodies are single in connection method with a titanium ball head and easy to fall off are solved, and the technical effects that a beta titanium alloy golf club product is high in strength, good in elasticity, light in weight, good in fatigue, good in product consistency and stability, consistent with a titanium ball head base body and capable of being welded and connected are achieved.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.